java - Downloading binary file from url -

i using code download files url:

fileutils.copyurltofile(url, new file("c:/songs/newsong.mp3")); 

when create url using instance, "https://mjcdn.cc/2/282676442/mjugu2fhbcatifzlzxqgqmfsaml0lm1wmw==", works fine , mp3 downloaded. however, if use url: "https://dl.jatt.link/hd.jatt.link/a0339e7c772ed44a770a3fe29e3921a8/uttzv/hummer-(mr-jatt.com).mp3", file 0kb.

i able download files both these urls within web browser. what's wrong here, , how can fix it.

i noticed difference between 2 urls:

• the first 1 gives file without redirection.
• but second 1 responds redirect (http/1.1 302 moved temporarily). it's special case, because it's redirect https http protocol.

browsers can follow redirects, program - reason (see below) - can't.

i suggest use http client library (e.g. apache http client or jsoup), , configure follow redirects (if don't default).

for example, jsoup, need code this:

string url = "https://dl.jatt.link/hd.jatt.link/a0339e7c772ed44a770a3fe29e3921a8/uttzv/hummer-(mr-jatt.com).mp3"; string filename = "c:/songs/newsong.mp3"; response r = jsoup.connect(url)     //.followredirects(true) // follow redirects (it's default)     .ignorecontenttype(true) // accept not html     .maxbodysize(10*1000*1000) // accept 10m bytes (default 1m), or set 0 unlimited     .execute(); // send request fileoutputstream out = new fileoutputstream(new file(filename)); out.write(r.bodyasbytes()); out.close(); 

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update on @ejp's comment:

• i looked apache commons io's fileutils class on github. calls openstream() of received url object.
• openstream() shorthand openconnection().inputstream().
• openconnection() returns urlconnection object. if there appropriate subclass protocol used url, return instance of subclass. in case that's httpsurlconnection subclass of httpurlconnection.
• the followredirects option defined in httpurlconnection , it's indeed true default:

sets whether http redirects (requests response code 3xx) should automatically followed class. true default.

• so op's approach work redirects too, seems redirection https http not handled (properly) httpsurlconnection. - it's case @vgr mentioned in comments below.
• it's possible handle redirects manually reading location header httpsurlconnection, use in new httpurlconnection. (example) (i wouldn't surprised if jsoup did same.)
• i suggested jsoup because implements way handle https http redirections correctly , provides tons of useful features.